I have had one of these on my Phaff7570 since I got it because the needle plate is metric (the only thing I have an issue with on this machine), and since I don't sew metric I need standard measurements. This is the only thing I've found that works at all. I had to make a couple of cuts to make it fit and the printing is getting pretty faded over time, but until I find something else that's better, this is what I'm using. My machine does not have a drop in bobbin so that's not an issue for me.

I bought this thinking I could use it on my Viking machine. A front drop in bobbin isn't going to work with this. It's just paper and has a sticky backing. It will work okay if I only want to use the 2" and larger on the seam guide. The 1/4" and up to 2 inches is not usable on my machine. I tried cutting it a few different ways to make it fit but just gave up in the end and threw it away. A waste of $2.98 for me. I rated it one star because that was as low as I could go on the ratings.